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A Buck-Boost converter is used to _________

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in Electric Drives by (99.8k points)
A Buck-Boost converter is used to _________

(a) Step down the voltage

(b) Step up the voltage

(c) Equalize the voltage

(d) Step up and step down the voltage

The question was posed to me in final exam.

My doubt stems from Dynamics in chapter Dynamics of Electrical Drives of Electric Drives

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The correct answer is (d) Step up and step down the voltage

To elaborate: The output voltage of the buck-boost converter is Vo = D×Vin ÷ (1-D). It can step up and step down the voltage depending upon the value of the duty cycle. If the value of the duty cycle is less than .5 it will work as a buck converter and for duty cycle greater than .5 it will work as a boost converter.

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